The put-down to me was where it said: "it's very easy to...", but failed to explain it beyond a few words. I'm relatively clever, but don't know exactly what they are talking about, and the lack of explanation with a statement of ease gives an implication that we should just know their solution.
That changes the message from an informative comment about alternative approaches into something the could be read as a dismissive rejection.
Now, a link to an article explaining the alternative approach... or even just one or two more explanatory sentences... would not come off that way. And maybe it is easy, but it would be better to just put up the facts, not judgments. Post an explanation and let the reader decide whether or not they think it is easy.